Results 1 to 10 of about 3,983 (154)

A General Pulse Width Modulation Method for Zero-Voltage-Switching Active-clamping Three-phase Power Converters: Edge Aligned Pulse Width Modulation (EA-PWM)

IEEE Open Journal of Power Electronics, 2020
A general PWM method for soft-switching three-phase power converters-Edge Aligned PWM (EA-PWM) is proposed. It aligns all the high loss commutation instants of the converter bridges in a switching cycle at the same instant so that all the switches of the
Keyan Shi, Jinyi Deng, Dehong Xu
doaj   +3 more sources

Droplet size spectrum, velocity, angle and flow rate of pulse-width-modulated spray nozzles with adjuvants. [PDF]

Pest Manag Sci
Optimizing PWM performance requires not only appropriate duty cycle selection, but also careful choice of adjuvant formulation tailored to each nozzle type. Drift control agents increased droplet size and reduced fine droplets, mitigating PWM‐induced variability. Decreasing the duty cycle consistently narrowed the spray angle.
da Cunha JPAR, Ozkan E, Jeon H, Zhu H.
europepmc   +2 more sources

MicroRoboScope: A Portable and Integrated Mechatronic Platform for Magnetic and Acoustic Microrobotic Experimentation. [PDF]

Adv Robot Res
This work presents the MicroRoboScope, a highly integrated, compact, and portable microrobotic experimentation platform combining electromagnetic and acoustic actuation with real‐time visual feedback into a single, end‐to‐end device. The system enables closed‐loop control and tracking algorithm experimentation within an accessible and unified hardware ...
Sokolich M, Yang Y, Cherukumilli S, Kirmizitas FC, Das S.   +4 more
europepmc   +2 more sources

Pulse width modulation for current source inverters with arbitrary number of phases [PDF]

Scientific Reports
Modulation techniques for current source inverters (CSIs) have traditionally been derived from those used for voltage source inverters (VSIs), with space vector modulation (SVM) and pulse width modulation (PWM) being the most popular. Among these, PWM is
Predrag Pejović, Takanobu Ohno, Uroš Borović, Spasoje Mirić   +3 more
doaj   +2 more sources

UC2-ESP: A general-purpose framework for open-source microscopy control. [PDF]

J Microsc
Abstract Building the optical setup for investigating biological questions comes with challenges. A major such challenge is setting up and synchronizing the control of multiple hardware components such as stages, cameras and lasers. With UC2‐ESP, we present a low‐cost electronics system powered by the ESP32 microcontroller (∼$10), designed as an ...
Diederich B, Fuchs I, Wang H, Bierhoff H, Kuttke C, Heintzmann R.   +5 more
europepmc   +2 more sources

Optimized Inverter Circuits for Driving Dual AC Loads for Home Solar Water Pumping [PDF]

E3S Web of Conferences, 2023
This research presents a generic pulse width modulation (PWM) approach for nine switch inverters and five-leg inverters. The circuit design of both inverters and a modulation mechanism for separate drives have been described. The available DC bus voltage
Gireesh Kumar Devineni, Venkata Sireesha Nagineni, Malleswara Rao D.S. Naga, Chinna Dastagiri Goud Pandla, Vaqur Musheer, Pavan kumar T.V.V.   +5 more
doaj   +1 more source

Symmetrical Cascaded Switched-Capacitor Multilevel Inverter Based on Hybrid Pulse Width Modulation

Energies, 2021
Multilevel inverters have been widely used in various industrial applications such as renewable energy generation and electric vehicles. An improved circuit of symmetrical cascaded switched-capacitor multilevel inverter is proposed so that the reactive ...
Lingling Cao, Jiefeng Lin, Shikai Chen, Yuanmao Ye   +3 more
doaj   +1 more source

Control Techniques for the Cascaded and Cross-switched Multilevel Inverter - A Comparison [PDF]

E3S Web of Conferences, 2021
Nowadays, the multilevel inverter has gained huge attention and has become more popularized in high voltage and high-power applications with low harmonics.
Shaik Sameera, Tummala Suresh Kumar, Rao D Srinivasa   +2 more
doaj   +1 more source

A Study on Performance and Characteristic Analysis According to the Operating Point of IPMSM Drive

Energies, 2023
This study presents the characteristics and performance of a motor at the operating point based on pulse-width modulation (PWM). PWM is used in modulating the output voltage of a three-phase inverter.
Hyun-Jong Park, Han-Woong Ahn, Sung-Chul Go   +2 more
doaj   +1 more source

Modified Phase-Shifted PWM for Cascaded Half-Bridges of Photovoltaic Application

IEEE Access, 2020
Photovoltaic power plants are generally far away from loads such as cities and industrial zones. Moreover, long-distance power transmission for renewable energy will become an inevitable trend in the future.
Xiaoguang Diao, Fei Liu, Yuan Song, Yizhan Zhuang, Mengyue Xu, Xiaoming Zha   +5 more
doaj   +1 more source